IMP528 Datasheet (IMP Inc) - HIGH-VOLTAGE EL LAMP DRIVER

IMP528, HIGH-VOLTAGE EL LAMP DRIVER

Pin Number 1 2 3 4 5 6 Name VDD RSW-OSC CS LX GND VB Function Positive voltage supply for the IMP528.

Inductor L may be connected here or to a separate unregulated supply.

Switch-mode resistor pin.

Switching frequency is determined by an external resistor, RSW.

Boost converter storage capacitor.

IMP528 POWER MANAGEMENT High-Voltage EL Lamp Driver 220 VPP Drive The IMP528 is an Electroluminescent (EL) lamp driver with the four EL lamp driving functions on-chip.

These are the switch-mode power supply, its high-frequency oscillator, the high-voltage H-bridge lamp driver and its low-frequency oscillator.

The IMP528 drives EL lamps of up to 50nF capacitance to high brightness; EL lamps with capacitances greater than 50nF can be driven, but will be lower in light output.

The typica

IMP528 Features

* N N N N N N N N N 220V peak-to-peak typical AC output voltage Low Power: 420µA typical VDD current Wide operating voltage range - from 2.0V to 6.5V Large output load capability - drives lamps with more than 50nF capacitance Eliminates external protection resistor in series with EL lamp Adjustable ou